CN114426838B - 一种复合增效助排剂及其制备方法 - Google Patents
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Abstract
本发明涉及一种复合增效助排剂及其制备方法，属于油气开采的技术领域。包括重量份的以下组分：甜菜碱2～3份，脂肪醇聚氧乙烯醚5～8份，双十二烷基三甲基氯化铵2～4份，烷基糖苷APG 1214 10～15份，水70～81份。本发明的复合增效助排剂不含氟，可有效地解决现有的助排剂对环境和人体的伤害。使用的物料中，例如双十二烷基三甲基氯化铵，其与甜菜碱和脂肪醇聚氧乙烯醚有良好的配伍性，能够降低油气田压裂液表界面张力。并且本发明的复合增效助排剂可在施工现场配置，使用方法简单、方便。
Description
技术领域
本发明属于油气开采的技术领域，具体涉及一种复合增效助排剂及其制备方法。
背景技术
压裂是组织开采油井时的常用技术手段，是利用泵增加压强在地层中产生裂缝，并将原有的裂缝进行扩大，之后注入支撑剂，增加地层渗透率。在该过程中，压裂液起着传递压力和引入支撑剂的作用。压裂施工时，外来的增产液滤液可能会与地层岩石和矿物产生物理和化学作用，从而引起液相以及固相的破坏，为了避免出现堵塞的情况，需要使用适当的方式，减少压裂液在过滤过程中出现的损失并尽快排出外部工作液，提高采收率，避免对地层造成损害，完成增产的任务。为提高排液速率以及返排的速度，目前己经形成了许多具有针对性的助排剂，例如含氟碳类表面活性剂。含氟碳类表面活性剂存在难分解的问题，导致了对人体和环境带来的损害。
发明内容
针对现有技术中存在的上述问题，本发明提供一种复合增效助排剂及其制备方法，以解决上述问题。
本发明的技术方案为：
一种复合增效助排剂，包括重量份的以下组分：甜菜碱2～3份，脂肪醇聚氧乙烯醚5～8 份，双十二烷基三甲基氯化铵2～4份，烷基糖苷APG 1214 10～15份，水70～81份。
优选的，包括重量份的以下组分：甜菜碱2.5份，脂肪醇聚氧乙烯醚6份，双十二烷基三甲基氯化铵3份，烷基糖苷APG 1214 12份，水78.5份。
优选的，所述助排剂中还包括pH调节剂；通过加入pH调节剂使助排剂的pH控制在6～8之间。
优选的，所述pH调节剂包括盐酸或碳酸酸钠。
优选的，所述助排剂中可加入5～15份低分子醇来调节助排剂的浓度。
优选的，所述低分子醇选自一元醇或多元醇。
优选的，所述一元醇包括甲醇、乙醇和异丙醇。
优选的，所述多元醇包括乙二醇和丙二醇。
所述复合增效助排剂的制备方法为：
将甜菜碱、脂肪醇聚氧乙烯醚、双十二烷基三甲基氯化铵和烷基糖苷加入水中，加热至 40～50℃下混合均匀，测试溶液pH，若溶液pH不在6～8之间，通过添加pH调节剂进行调节。根据溶液的流动性，添加低分子醇进行调节。
本发明的有益效果为：
本发明的复合增效助排剂不含氟，可有效地解决现有的助排剂对环境和人体的伤害。使用的物料中，例如双十二烷基三甲基氯化铵，其与甜菜碱和脂肪醇聚氧乙烯醚有良好的配伍性，能够降低油气田压裂液表界面张力。并且本发明的复合增效助排剂可在施工现场配置，使用方法简单、方便。
具体实施方式
为了使本技术领域的人员更好地理解本发明中的技术方案，下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
实施例1
一种复合增效助排剂，包括重量份的以下组分：甜菜碱2份，脂肪醇聚氧乙烯醚5份，双十二烷基三甲基氯化铵2份，烷基糖苷APG 1214 10份，乙二醇5份，水81份。
制备方法如下：
将甜菜碱、脂肪醇聚氧乙烯醚、双十二烷基三甲基氯化铵和烷基糖苷加入水中，加热至 40℃下混合均匀，测试溶液pH＝7；然后添加乙二醇5份调节溶液，得复合增效助排剂。
实施例2
一种复合增效助排剂，包括重量份的以下组分：甜菜碱2.5份，脂肪醇聚氧乙烯醚6份，双十二烷基三甲基氯化铵3份，烷基糖苷APG 1214 12份，碳酸氢钠2份，乙醇10份，水78.5份。
制备方法如下：
将甜菜碱、脂肪醇聚氧乙烯醚、双十二烷基三甲基氯化铵和烷基糖苷加入水中，加热至 40℃下混合均匀，测试溶液pH＝5，加入碳酸氢钠2份，调节溶液pH为6；然后添加乙醇10份调节溶液，得复合增效助排剂。
实施例3
一种复合增效助排剂，包括重量份的以下组分：甜菜碱3份，脂肪醇聚氧乙烯醚8份，双十二烷基三甲基氯化铵4份，烷基糖苷APG 1214 15份，碳酸氢钠5份，乙醇15份，水 70份。
制备方法如下：
将甜菜碱、脂肪醇聚氧乙烯醚、双十二烷基三甲基氯化铵和烷基糖苷加入水中，加热至 40℃下混合均匀，测试溶液pH＝5，加入碳酸氢钠5份，调节溶液pH为6；然后添加乙醇15份调节溶液，得复合增效助排剂。
测试例
对实施例1～实施例3制备的复合增效助排剂进行实验测试，测试结果见表1：
表1-检测结果
通过测试结果可以看出，本发明制备的助排剂与市售含氟产品的效果相当，可有效地替代含氟产品。
尽管通过优选实施例的方式对本发明进行了详细描述，但本发明并不限于此。在不脱离本发明的精神和实质的前提下，本领域普通技术人员可以对本发明的实施例进行各种等效的修改或替换，而这些修改或替换都应在本发明的涵盖范围内/任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求所述的保护范围为准。
Claims (6)
1.一种复合增效助排剂，其特征在于，包括重量份的以下组分：甜菜碱2~3份，脂肪醇聚氧乙烯醚5~8份，双十二烷基三甲基氯化铵2~4份，烷基糖苷APG 1214 10~15份，水70~81份，低分子醇5~15份；还包括pH调节剂，通过加入pH调节剂使助排剂的pH值在6~8之间。
2.如权利要求1所述的复合增效助排剂，其特征在于，所述pH调节剂包括盐酸或碳酸钠。
3.如权利要求1所述的复合增效助排剂，其特征在于，所述低分子醇选自一元醇或多元醇。
4.如权利要求3所述的复合增效助排剂，其特征在于，所述一元醇包括甲醇、乙醇和异丙醇。
5.如权利要求3所述的复合增效助排剂，其特征在于，所述多元醇包括乙二醇和丙二醇。
6.一种制备如权利要求1所述的复合增效助排剂的方法，其特征在于，过程如下：
将甜菜碱、脂肪醇聚氧乙烯醚、双十二烷基三甲基氯化铵和烷基糖苷加入水中，加热至40~50℃下混合均匀，通过添加pH调节剂控制溶液pH值在6~8之间；根据溶液的流动性，添加低分子醇进行调节。
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Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Chongqing Shale Gas Co.,Ltd. Patentee after: Guangyou (Shandong) Energy Technology Co.,Ltd. Address before: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: Sinopec Chongqing Shale Gas Co.,Ltd. Patentee before: Binzhou Guangyou Chemical Co.,Ltd. |
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